We introduce you to volcanics manufacturers, volcanic rock factory outlets in Beijing. Tel :010 -5,626,761,615,321,815,376 the Wattley source environmental company has a high-quality product quality, reasonable price, professional technical support, reliable reputation guaranteed. Welcome to inquire, we will give you the most satisfactory service. · · · · URL: http://www.bjhxtcj.com/ Fax :010-89,500,173 QQ: 2399748162 Here is the Intro volcanic rocks. The volcanic rocks of biological filter is used in biological aerated filter biological filler. Mainly used as a biological carrier of biological water treatment. The product was first born in the United States, China, once rely on imports to implement bio-linked to the membrane technology, because of its high cost, the researchers developed a bio-ceramic to replace, the effect is not very satisfactory, and the cost is high. Today, the national geological research experts in the country to find a better the volcanic rocks biological filter deposits after the beneficiation, finishing with the activation of a series of process from the processing of granular filter, the main ingredients of silicon, aluminum, calcium, sodium dozens of minerals and trace elements magnesium, titanium, manganese, iron, nickel, cobalt and molybdenum, etc., and the apparent irregular particles, the color is dark brown or grayish brown, the porous lightweight, the particle size according to different requirements. Volcanic rock filter media filter can not only deal with municipal sewage, river and lake environment water biodegradability of organic industrial wastewater, gray water, micro-polluted source water, oil filter, instead of quartz sand in Water Treatment, Activated Carbon, anthracite is used as a filter media to do while on the the tail water after secondary treatment process sewage treatment plant has been advanced treatment of reuse water standards for water reuse process water, volcanic rock filter is its high-quality filtering effect, low market prices, applications all aspects of water treatment, get more recognition and support of the people in the industry. The volcanic rocks of biological filter performance in physical microstructure: the rough surface of the microporous These features are particularly suited to microbial surface growth, reproduction, formation of biofilms. Volcanic rocks Biological Aerated Filter filter can handle not only the municipal sewage, and biodegradability of organic industrial wastewater, drainage, micro-polluted source water, but also can replace the quartz sand to the water treatment, such as activated carbon, anthracite is used as a filter media while on the the tail water after secondary treatment process sewage treatment plant has been advanced treatment of recycled water standards for water reuse its treated effluent. Volcanic rocks of biological filter performance hydraulics: 1, porosity: inside and outside the average porosity of about 40%, of the resistance of the water is small, compared to the same time with the same filter, filter less required, to achieve the same expected Filter goal. 2, specific surface area: larger than the surface area of ??the opening rate and inert, is conducive to microbial exposure linked to film and growth, maintain higher microbial biomass, microbial metabolic processes required oxygen and nutrients and metabolic favor mass transfer process waste. 3, the filter shape and water flow pattern: without tip granular volcanic rocks of biological filter and aperture most of than ceramsite, so use small flow resistance, saving energy. Companies adhering to the quality and credibility of the first, the purpose of the contract and trustworthy. Production according to customer demand, packaging, factory price sale to customers, the company responsible for goods sent to the customer designated locations, to ensure satisfactory products and services to provide users with continuous and stable. Welcome to the new and old customers to negotiate business .... The company can also free mail sample · · ·