Yiwu Huachuan Sewage Treatment Co., Ltd. (Zhejiang Huachuan Industrial Group Co., Ltd. Sewage Treatment Center) is located in Yiwu City, Chishang Town, Feifeng Road, No. 50, covering a total area of more than 50 acres, with a total cumulative investment of more than 200 million yuan, the current sewage treatment capacity is designed to reach 30,000 t / d, the treatment process uses pretreatment + anaerobic system + aerobic system + Fenton system + sand filtration system, the scope of services for the Zhejiang Huachuan Industrial Group Co. Ltd. paper wastewater, printing and dyeing wastewater in the park, dust removal in the thermal power plant and domestic sewage in the plant. Wastewater discharge to implement the "Pulp and Paper Industry Water Pollutants Emission Standards" (GB3544-2008) Table 3 special emission standards for water pollutants. The anaerobic tower of the sewage plant produces more than 10 million cubic meters of biogas annually, which is transported to the power plant for combustion treatment, and the sludge pressed out from the plate and frame of the sewage center is transported to the power plant for incineration after sludge drying to realize resource recycling.
Sewage + raw water + water utilization
By adjusting the water structure and transforming the water used in production process, Huachuan Group fully utilizes sewage, raw water and water resources to build a water cycle system.
The construction of wastewater treatment center, and a number of technical upgrades, so that the paper sewage to meet the industrial water standards, back for production use.
Construction of industrial water station, take the river water purification, the garbage leachate water, chemical water production water and sewage water purification water mixing, made of industrial water, instead of the original tap water and part of the reservoir direct water supply, maximize the savings of high-quality water resources. At the same time, the cooling water from the cooling tower of the power plant is used to supplement the water used in the paper-making and printing and dyeing agglomeration area, eliminating water discharge.
Through the water as the medium of material flow, along with the energy flow, on the one hand, the use of cooling tower heat to the whole group water supply (including chemical water heat), on the other hand, the use of chemical water production water, absorption of heat generated by compressed air, and can be further utilized in the demineralized water to absorb the chimney waste heat. Realize "one water multi-purpose, ladder utilization, recycling".
