First time for Fujian to formulate treatment standards for stone plate wastewater

Due to the pollution of waste water from the stone sheet processing companies, the status of the “milk creek” in the Minjiang River Basin, which is difficult to cure for a long time, is expected to be effectively managed in the future. The reporter learned from the provincial Environmental Protection Department yesterday that in recent years, the provincial standard for environmental protection, drafted by the provincial environmental protection department, "Technical Specifications for Stone Treatment of Architectural Facing Stone Processing Wastewater," has now been drafted and compiled, and it has entered the open solicitation stage.

In recent years, the province's architectural decorative stone processing industry has developed rapidly and has become a traditional pillar industry. By the end of 2008, the province's large-scale stone enterprises had achieved a production value of 32.5 billion yuan, and the export value had exceeded 50% of the total national stone export volume, ranking first in the country. Among them, the Gutian, Luoyuan and Lianjiang counties in the Minjiang River Basin have a total of 224 certificated mines and 855 architectural and decorative stone processing enterprises with an annual production value of 3.78 billion yuan. However, due to the lag in planning, some companies have adopted extensive production management, and the previous site selection is inappropriate, environmental protection facilities are not perfect, and the owners have poor awareness of environmental protection, stone plate processing pollution has become an important industrial pollution source in the Lancang River Basin, drinking water in the downstream of the Minjiang River. The water quality of the water conservation area has caused serious pollution. In recent years, although the relevant departments have actively carried out rectification work, due to various reasons such as technology and economics, it is difficult to truly achieve long-term stable compliance in the actual process of stone processing wastewater treatment.

In order to further strengthen the prevention and control of pollution in the stone plate industry in our province, the Provincial Environmental Protection Agency has for the first time formulated and formulated the Fujian Provincial Local Standard "Technical Code for Wastewater Treatment of Architectural Finishes and Stone Processing". According to reports, according to the stone processing technology and its specific processes, the “Specifications” soliciting opinions drafted wastewater as three categories: saw machine wastewater, mill wastewater, and trimmer wastewater. Stone plate processing companies are required to adopt full-process control and clean production. In the choice of treatment process, we should fully integrate the actual production of the industry in the province, adhere to the principle of reliable technology, discharge standards, economical application, and easy operation.

In addition, a rainwater and sewage diversion system should be adopted in the plant area, and the initial rainwater should be intercepted, adjusted and treated. Advocate waste water to adopt a centralized treatment method for the construction of the park, and implement a unified professional operation and management; design a reasonable mud removal measures and sludge treatment system to avoid artificial slag, improve the level of mechanization, and ensure the stable operation of the system. At the same time, enterprises are encouraged to make comprehensive use of sludge, waste rock slag, and waste stone materials, and to process and produce stone and construction materials, in order to achieve solid waste reduction and resource utilization. According to the relevant national regulations, relevant requirements for the configuration of the drainage outlet on-line monitoring system are proposed.

Experts believe that at present, the contents of technical specifications for stone processing wastewater treatment at home and abroad are still at a blank stage. As a major province of stone processing in China, according to the actual situation of the stone processing industry in Fujian, the formulation of relevant local standards is of great significance for the implementation of sustainable development strategies, standardization of stone processing industry development and promotion of energy conservation and emission reduction, and also for the national environmental protection standards system. Complement and improve forcefully.