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"Urban sewage treatment and recycling facilities construction planning" requirements, by 2015, municipalities, provincial capitals and cities of the city of sound disposal of sludge treatment rate of 80%, and the remaining city to 70% of the city, county and key towns To 30%, the actual situation and the goal of comparison there is a gap. Environmental Protection Department of Solid Waste and Chemical Management Technology Center, deputy director of Hu Huarong face of the seminar in the sewage sludge treatment process of environmental risk control issues, first of all to find out the generation and identification of sewage sludge problem; secondly to strengthen the source Control and process supervision, and grasp the hot issues, and finally put forward the direction of future reform. How to identify sewage sludge is hazardous waste? Sewage sludge refers to the semi-solid or solid matter produced in the sewage treatment process. As far as environmental protection concerns are concerned, sewage sludge collects almost all the pollutants in the sewage. According to their sources into industrial sewage sludge, sewage sludge. Industrial sewage sludge in accordance with the management properties are divided into hazardous waste and general industrial solid waste. To determine whether the new waste is hazardous waste is based on the "National List of Hazardous Wastes" and "Hazardous Waste Identification Standards." The National List of Hazardous Wastes (2016 Edition) is issued by the Ministry of Environmental Protection jointly with the National Development and Reform Commission and the Ministry of Public Security. It will come into force on August 1, 2016. The National List of Hazardous Wastes is divided into 46 categories and 479 categories according to the sources and components. The total number of "hazardous wastes" related to sewage (waste water) sludge is 93, mainly including organic pollutants and heavy metals Organic pollutants or heavy metal pollutants, accounting for 19.4% of the whole list. Outside the National List of Hazardous Wastes, sludge suspected of containing toxic and hazardous substances needs to be identified. Identification points are based on the production process of raw and auxiliary materials and reaction process to determine which contains toxic and hazardous substances, and with the "Hazardous Waste Identification Standard" listed in the toxic and hazardous substances in the control, select the intersection as part of the identification of toxic and hazardous substances, Quantity or content of more than the standard value shall be hazardous waste. How to control the pollution of environmental risks? Talking about the environmental pollution control process of sewage sludge treatment, Hu Hualong to illustrate the way, first of all to follow the source control, the principle of process control. Process supervision is based on technical policies, standards and norms. The so-called technical policy is to specify the specific technical line, to allow what kind of technical routes, which prohibits the use of technical routes. For example, February 28, 2009 Ministry of Housing, Environmental Protection, Science and Technology jointly issued the "urban sewage treatment plant sludge treatment and pollution prevention and control technology policy (Trial)" is the sludge treatment and disposal process supervision policy basis. The so-called standard, specification is the specific technical line of pollutant control or emission requirements. For example, if the sewage sludge does not belong to hazardous waste, we should be in the storage process based on "general industrial solid waste storage, disposal sites pollution control standards"; if the sewage sludge is hazardous waste, then its storage in accordance with the "dangerous Waste storage standards "requirements. In addition, sewage sludge treatment and disposal process, there are standards and norms, such as "urban sewage treatment plant sludge treatment and disposal of technical specifications (draft)." Second, we should pay attention to the problem of sewage sludge resource products. As long as the toxic and harmful substances should be used to control the product standards, that is, toxic and hazardous substances limited control. This is a special property requirement for making waste products. The "urban sewage treatment plant sludge disposal brick with clay" national standards, for example, urban sewage treatment plant sludge brick can not be casually, although the general industrial solid waste, but there must be standard control, because it contains heavy metals , Organic pollutants and pathogens, brick must meet the appropriate standards to the system. For the general solid waste, the state encourages the use of resources, but there is no use of resources of the sludge value, and difficult to eliminate or reduce its harmfulness, it is necessary to control their toxic and hazardous substances. Control of the path there are two: First, high-temperature melting of vitrification, the purpose is to control the release of toxic and hazardous substances into the environment; the second is landfill. For municipal sewage treatment plant sludge, according to "urban sewage treatment plant sludge disposal landfill with mud" standard; for sewage sludge is hazardous waste, in accordance with the "hazardous waste landfill pollution control standards" requirements landfill. How to grasp the hot issues? As to which hazardous wastes can be uncaped, Hu Hualong indicated that according to the State Environmental Protection Administration Bulletin (2007 No. 37) "Hazardous Waste Identification Standard" General provisions: Hazardous waste disposal sludge determination rules are toxic (including leaching toxicity, Acute toxicity and other toxic) and infectivity of one or more hazardous characteristics of hazardous waste treatment after the waste is still hazardous waste, the state laws and regulations, unless otherwise specified in the standard. After the disposal of hazardous waste, the state regulations and standards are clearly defined, there are the following three categories: First, "centralized management of medical waste," the incineration of slag can be sent to the disposal of landfill, the detection of hazardous waste except; Second, "chromium slag pollution control technology treatment specification", chromium and barium leaching concentration is less than a certain value can go to the landfill or general industrial solid waste landfill; third is "on the municipal solid waste incineration fly ash disposal The fly ash has been coupled and solidified and stabilized. The moisture content, dioxins content and the concentration of pollutants in the leachate are less than a certain value, and can be landfilled separately in the municipal solid waste landfill. How to treat the development of municipal sewage sludge industry opportunities? On the future of municipal sewage sludge road, Hu Hualong that the first "water ten" clearly defined; "urban sewage treatment fees should not be lower than the cost of sewage treatment and sludge treatment and disposal." That is, in the collection of sewage treatment fee, while the sludge treatment costs will be clearly included in the scope of the charge, effectively, "muddy water" fell to the point, but also for the development of market-oriented industry established a cost mechanism. Second, the relative industrial sewage sludge, municipal sewage sludge utilization and disposal of the technical policies, standards and more sound, but also laid the foundation for industrial development. How to promote the reform of hazardous waste regulation? The second is to strengthen the main responsibility of enterprises to promote the extension of producer responsibility system; third is to promote the development of hazardous wastes; the second is to strengthen the responsibility of enterprises, Improve the identification of hazardous waste, improve the hazardous waste management system; Fourth, improve the technical policies, standards; Fifth is to find out the base, to guide the large-scale enterprise management; 6 is to promote the disposal capacity of incineration and landfill Facilities construction, protection of long-term construction land. Seven is to promote the classification and specialization, large-scale and park-based use and disposal, development of classification, classification and storage and pre-treatment services industry.
Cooling towers in industrial production as the main core of the circulating water cooling, which is the carrier pipe cold tower to the entire central air-conditioning system, affecting the country's industrial production costs and efficiency in China's industrial production. Cooling towers used in industrial production properly, it will cause the device to heat is not timely, stagnant production, high water temperature and other dangerous situations. Shenzhen enterprises engaged in the cooling tower motor cooling tower fill explain the main factors to promote hydrothermal circulation, therefore, to select high-quality cooling tower pipe. Cross-flow cooling tower pipe size standard From the top of the cooling tower fan and the lower end of the filler should be 1.2 times the fan diameter. Cooling tower fill cleaning methods (a) 1, manual cleaning of the cooling tower dirt off slag; 2, repeatedly washed with water cannons filler, clearing sludge scale cleaning under the like; 3, with about 50 ℃ hot water and detergents to dissolve the TNB safe and efficient flush pump repeatedly washed with filler until the scale clean (if a longer period of fillers, aging and cause the collapse, the proposed replacement filler), while adding water bactericide agents - sterilization, algae and bacteria completely kill the organism; 4, confirm that the entire system of all cleaned, drain water; 5, rinse with water and tower packing inside and outside; 6, to restore the entire system, water can be used; 7, after all the recovery, management Party acceptance; 8, evacuation Party items, cleaning site health; 9, period: According to the actual situation. Cooling tower fill cleaning method (b) 1, with a temporary plastic sheeting to build a large pool; 2, the cleaning agent to clean water; 3. Remove the filler from the cooling tower into the drug pool to soak; 4, will soak clean filling with water rinse after Replacing the cooling tower; 5, with the sticky agent cloth on the cooling tower makeup along with the soaking water is clear mouth; 6, the same way the cooling tower chassis scale were cleaned; 7, packing and rinse with water tower inside and outside; 8, to restore the entire system, water can be used;
Biological fouling is a serious impact on the effect of the cooling water system of impurities in the water will reduce the cooling effect of the condenser, and reduced efficiency. Due to the presence of heterotrophic bacteria in the water, constantly play a role, so that impurities in the water to continue as the main colloidal substances accumulated bonded together to form a viscous substance - this is the so-called biological slime. The presence of biological slime not only affects the normal cooling water, if the covering to the metal surface, the metal will also affect the corrosion inhibitors on the formation of scale inhibition, corrosion rate even faster, improve pharmaceutical waste input costs. I plant developed biological slime stripping agent to penetrating agent, the release agent, the surfactant is a major component. Slime stripping agent performance characteristics:1, sludge remover product is a quaternary ammonium salt and amine-isothiazolin-ketone compound into the biocide. 2, sludge remover is an efficient, broad-spectrum, low toxicity, efficacy of fast and long-lasting, strong penetration characteristics. 3, sludge remover can quickly penetrate into the slime layer on a strong biological slime stripping and cleaning action. 4, wide application of sludge remover PH range. Use of sludge remover: sludge remover This product is used in a variety of industrial cooling water disinfection, wastewater treatment systems, such as algae processing. Monthly dosing 2∽4 times. Impact dosing, at a concentration of 80∽150mg / l. Sludge remover packaging and storage: sludge remover The product is 25L or 200L plastic drum, storage period of ten months. Security slime stripping agent: sludge remover product is acidic, avoid contact with eyes, skin or clothing, splashed on him once, rinse immediately with plenty of water.
Current research areas of the market promising and competitive inhibitor is an organic phosphorus, people trying to develop a good performance, low-cost, non-toxic, pollution-free corrosion inhibitor new varieties. Due to cost factors, the amount of technical issues, rarely used in the cooling system, and a variety messy, no systematic study showed that: non-phosphorus corrosion inhibitor is a copolymer, fatty acids, organic polymers and high corrosion inhibitors, is an excellent inhibitor compound of poor water quality high hardness, high alkalinity and high chloride, etc. have better scale and corrosion inhibition effect, used at lower concentrations can cause fouling of the ion effective dispersion, chelation and lattice contorted and so on, so as to effectively prevent fouling of heat transfer equipment water side of the inhibition effect of copper and copper alloy is extremely effective. Long-term use can also make soft and gradually dissolve the old scale, to improve the efficiency of heat transfer equipment, extend equipment life, to ensure normal production for a long time had a significant effect. Phosphorus inhibitor does not contain any form of phosphorus products and their end products are non-toxic, will not produce water pollution, green. Non-phosphorus corrosion inhibitor performance 1, does not contain any phosphates, it is a completely new type of green products. 2, corrosion and scale performance and phosphine formulations quite, good scale and corrosion inhibitor performance. 3, since the water treatment agent in phosphorus, so the use of the process does not harm the phosphorus-based agents often occurs calcium phosphate scale. 4, to detect with automatic dosing system used in conjunction. 5, products used in chemical, petrochemical, power, iron and steel enterprises in circulating cooling water system.
HPMA, also known as poly-maleic anhydride (HPMA) is a low molecular weight polyethylene FMLN quality, non-toxic, soluble in water, high chemical and thermal stability, decomposition temperature above 330 ℃. There are obviously threshold effects at high temperature (less than 350 ℃) and high PH value, while HPMA have low toxicity, non-carcinogenic, causing distortion effect. HPMA alkaline water is suitable for use with other drugs or complex. HPMA scale performance and excellent high temperature performance, and therefore in the flash desalination devices and low-pressure boiler, steam locomotive, crude oil dehydration, water pipelines and industrial circulating cooling water are widely used. In addition, HPMA has good corrosion inhibition effect is better with zinc salt, used as cooling water, low pressure boiler water treatment agent oil field water, scale processing crude oil dehydration system. HPMA as a less expensive, high-performance green water treatment chemicals, has become a highly efficient water-soluble DISPERSOR important one. HPMA monomer based on hydrogen peroxide as an initiator, homemade acid / metal ion complexes Cui agent and add-made additives containing carboxyl functional group, polymerization at atmospheric pressure, a one-step synthesis quality HPMA monomer, compared with the conventional production of HPMA, raw material used in the present process easy to get, with less low cost and less investment in equipment, short production cycle, energy consumption is small, easy to realize industrial production. HPMA can also used for cement admixtures. HPMA is usually 1 ~ 15ppm with an organic phosphonate compound for circulating cooling water, oil field water, crude oil dehydration treatment furnace treatment and low pressure boilers, with good inhibit scale formation and the role of stripping the old scale, scale rate up to 98%. When it with zinc salt, can effectively prevent the corrosion of carbon steel.
First, the coal mine before sewage treatment Mining of coal so that the original good quality groundwater contamination, a large number of pulverized coal. Rock dust, suspended solids, human and microbial contamination into the water, mine water and some high suspended solids, COD, sulfide and total hardness. So, a lot of mine emissions standard sewage directly discharged without treatment, causing water pollution, groundwater system damage, many coal production, domestic water passive. Mine water is a precious resource, how to deal with the back, over the years a lot of work and achieved some results. However, the current domestic processing method is still used in the traditional process, although the process of water treatment and reuse is better, but the technology behind the equipment, facilities complex, large investment projects, covering, high operating costs, operation and management is not convenient, so, over the years there is no nationwide universal application. Mining wastewater complex, in the same mine waste water also contains iron, manganese and other heavy metals, sulfur, fluorine, chlorine and other non-metallic and organic pollutants and suspended solids, some weakly acidic mine waste water, even in the same mine, the aquifer different properties are different wastewater, or even very different. Mine wastewater quality similar to the general nature of urban sewage, but unlike municipal wastewater (urban sewage often include some industrial waste water). Its characteristics can be summarized as follows: changes in water quality and quantity is large, low concentration of pollutants, wastewater biodegradability good. Mine sewage treatment equipment based on A / O biochemical process based, biodegradable sewage sedimentation, oxidation and disinfection processes in one sewage and industrial waste similar to domestic sewage, compact structure, small footprint, all set on the ground floor, run economy, impact concentration ability, high processing efficiency of an efficient sewage treatment plant. Second, the principle of coal mine waste water treatment The mine into the sewage treatment facilities in the multi-purpose, water and water treatment agent when in contact mixed with an organic-inorganic composite synergy that particles adhered to each other, floc from small to large settlement to complete at the moment coagulation process. Third, the process Mine sewage treatment facilities at the same time hit the versatility, the preparation of a good water treatment agent has the right amount of water added to the multi-purpose facilities, through its own plug-flow, mixed, allowed to stand for 20-30 minutes to reach the national environmental emission standards discharge or reuse.
Daily water quality central air conditioning circulating water system stabilization process is very important, not only to extend the service life of piping and equipment, namely water treatment effect is to achieve the life of piping and equipment design; and can save a lot of energy and water ; central air conditioning system can prevent scale, corrosion, fungus and algae attached to ensure the economical and safe operation of the system equipment. Of course, but also to improve the health of fan coil system, create a stable and comfortable working and living environment. Chemical dosing water stabilizer loop approach is the most efficient and economical processing of technical measures that, according to water quality and the characteristics of the material circulating cooling water and chilled water systems, use of appropriate water quality stabilizer control system scaling, corrosion, bacteria algae and other breeds. In terms of the system to maintain water volume for circulating cooling water systems, cooling towers dosing port at the first dosing agent (ie based dosing), the inhibitor can 0.5Kg per ton of water added, according to the time water replenishment with the proportion of the amount of additional agents, usually once a month dosing. For closed chilled water system dosing port is at the expansion tank to the system to maintain water volume per ton of water dosing 0.2Kg DISPERSOR proportion once added to the chilled water system. In the circulating cooling water system, oxidized and non-oxidized bactericide type two alternate dosing, it can achieve better sterilization and peeling effect, can weaken the resistance of microorganisms. Its dosage depends on the breeding of bacteria and algae in water availability, according to the system to maintain water dosing, dosing drug concentration is usually 0.5 ~ 1Kg fungicides per ton of water, usually once a month dosing sterilization, and both fungicides at weekly intervals time alternately shock dosing. Central air conditioning circulating water chemical treatment, according to the use of local water quality conditions, temperatures, the device materials to determine the appropriate water quality stabilizer, and drug concentration should be based on the specific water quality by the decision analysis to monitor the dosage to maintain and repair the system within the protective film formed on the surface of the metal to prevent and disperse the ions into the dirt scale, control the generation of bacteria and algae, the purpose of anti-corrosion, scale and control the growth of microorganisms. Circulating water quality after-treatment in line with GB50050-95 "industrial cooling water treatment design specifications", in which: carbon steel corrosion rate ≤ 0.125mm / a; copper corrosion rate ≤0.005mm / a; fouling resistance ≤4.0 × 10mk / s; the total number of heterotrophic bacteria ≤5 * 10 Ge / mL. In general, water quality stabilizer for central air conditioning water treatment cycle of three major categories: scale and corrosion inhibitor, corrosion inhibitor and biocide. 1. DISPERSOR The water stabilizer to complex water treatment chemicals, has a synergistic effect, chemical stability, high temperature, low phosphorus environmental protection, which can control a variety of metal corrosion and dirt generation has good scale and corrosion inhibition effect. By chelating, solubilization and absorption dispersion, so that Ca, Mg ions and other organic dirt stably dissolved in water, calcium carbonate, calcium sulfate, barium carbonate, phosphate and the like have excellent scale inhibition, well fouling control system, and the iron oxide and silica colloidal dispersion also has a good effect, while a dense protective film on the metal surface of carbon steel to prevent corrosion immersion ion on equipment surfaces play a good corrosion protective effect. 2. Inhibitor This is an anodic inhibitor, stability, good performance, compact multilayer polymeric protective film of carbon steel, copper and its alloys the material surface, the metal surface can not afford to redox reactions, with good corrosion performance . 3. biocide This product is a biocide formulations for circulating cooling water system easy to breed bacteria and algae in the characteristics of the design. The sterilization of low toxicity, high efficiency, broad-spectrum biocides, into oxide and non-oxide type two fungicides, effective control can be irreversible and kill a wide range of microbial decomposition, or itself be microbial degradation; having the ability to penetrate and disperse or release slime slime, slime stripping both fine and suppress bacteria and algae propagation effects. While in use concentrations, with water and shade scale inhibitor dispersing agent can be compatible with each other.
Recently, the Wuhan Youth chief presided over the company, China's first shale dispersant science and technology projects and the Chinese Academy of Sciences Wuhan University to participate in the "development of efficient shale dispersant and its application in the mud shield tunneling" Project passed inspection. Inspection team headed by the Chinese Academy of Sciences Professor Zhang Weimin, Director of Science and Technology Liu Wei, Zhang Jianguo, Director of the Office of Science and Technology, Wuhan University professor Liu Yongqiang leading experts and other related components. Inspection team through on-site observation, listening to these reports and view data and other forms of highly efficient dispersant shale project rigorously review and acceptance. The project is to solve the conventional sludge remover in addition to poor performance issues mudstone, the research team focused on the core of scientific research, the introduction of international advanced research and development equipment, with the micro-charge force matrix materials at the nanoscale molecules dispersant molecules adsorbed on fast mudstone surface; and then through the ion penetration, quickly peeled and shale dispersion, eventually flowing out. The new shale efficient dispersant, the effect increased by 60% compared with conventional shale dispersants and sludge remover, mudstone peel faster, the better. In Wuhan Chief Green production plant, the inspection team of experts visited the R & D center, production workshop and warehouse, listened carefully to project leader Dr. Wang Hongbo introduction to the entire development process, asked in detail about the operation of automated production lines. And the site to watch the art using homemade shield model to simulate shield machine heads knot cake after successfully resolved "mud cake" problem by adding efficient shale dispersant. Then, in the acceptance review meeting, the "efficient shale dispersant" a working group report, the inspection team experts question on relevant technical issues, discuss and form opinions and acceptance. Inspection team of experts agreed that new and efficient green mudstone in Wuhan R & D chief dispersants good quality, good effect to enable rapid sediment separation, quickly stripped shield machine cutter cake. It is the high quality and efficiency of mudstone domestic market dispersant has a high value, market prospects. The project technology has reached the international advanced level, to be reviewed by. Director Liu Wei concluding remarks, pointed out that the chief of the green as the largest shale dispersing agent production enterprises, innovative projects undertaken by strong, high technology content of the products. The next step should give full play to their advantages, strengthen cooperation with the Chinese Academy of Sciences and universities and other research institutions to accelerate the development of new products, produce better quality shale efficient dispersant, provide solutions for the metro and slime and mud shield machine problems . Hope that through joint efforts to build a youth chief in Wuhan dispersant shale industry leader, leading the entire industry to enhance the level of production shale dispersing agent, a strong impetus to the rapid development of shale dispersing agent industry.
Sludge remover is a biocide, a surfactant, a strong penetrant, stabilizer composition, can quickly penetrate into the sludge floc, the oxidative decomposition in air bubbles, fungicides and binding agent, so stick after the mud off with the water discharge, to achieve strong stripping and cleaning purposes, clean the surface to prevent corrosion under the scale. Sludge remover has excellent dispersion and permeability, its penetrating power, low toxicity, quick effect on the slime slime, sludge, bacteria and algae secretions and bacteria and algae and other components of a good decomposition exfoliation . It also has a softening and cleaning the metal surface dirt Chen, corrosion rate of heat transfer equipment, and improve the role. Sludge remover also on the sulfate-reducing bacteria, nitrifying bacteria and nitrification bacteria have a strong role in the killing. More on sludge remover questions, please call: 0632-3536598 Zaozhuang City, east Tao Chemical Technology Co., Ltd.
The main ingredient Isothiazolin -3-one isothiazolin -3-one Product Features Broad-spectrum bactericidal effect: You can also inhibit bacteria, fungi and mold, no resistance. Low cost: cost is generally lower than the fungicide market, and easy to use. It has excellent physical and chemical compatibility. When used as fungicides in industrial water treatment, in general, with the effect of concentration, corrosion inhibitors, scale dispersant and most anionic, cationic and non-ionic surface active agent to achieve physical solubility. Effective at low concentrations: isothiazolin-one even at very low concentrations, the still water cooling can effectively inhibit bacteria, fungi and algae growth, which is unmatched by other agents. For a wide range of PH value: isothiazolin-one, although acidic, but in a wide range of PH value is applicable, even in alkaline conditions to maintain a higher stability. Harmful to the environment: whether the environmental impact of selecting a pharmaceutical treatment of important conditions. When the agent is diluted to below the concentration, natural degradation of toxic substances, does not cause environmental pollution. use The products are widely used in industrial water treatment as a bactericide, fungicide paper coating resin system preservatives. Reference amount Generally recommended to use a concentration of: 5-10ppm. The amount of the above reference only, the real needs of concentration should be considered seasonal, environment, water and other factors may be, but also by the degree of infection of different microorganisms affect. Save Storage 25kg or 250kg plastic drum, stored in a dark and ventilated place, storage temperature is below 40 ℃, storage period of 12 months.


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