China 3-9mm Quality Water Treatment Filter Natural Lava Stone Volcano Stone

3-9mm Quality Water Treatment Filter Natural Lava Stone Volcano Stone
Description of the volcanic rocks

1:Volcanic stone is a functional kind of environmental protection material.
2:It is a kind of precious and polyporous stone, and formed by volcanic glass ,mineral and air bubble in the process of volcanic eruption.
3:It contains sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt, molybdenum, and other dozens of minerals and trace elements.
4:It has no radiation .
5: It has far infrared magnetic wave.
Slide-proof, acid & alkali proof
Specifications
1.Size :1-3mm/3-5mm/5-8mm/8-20mm
2.Color :Black,grey and red color

3.Material: Natural Volcano Stone
4.Use life: Min.6 month
5.Character: LAVA with hole;No pointed particle shape, small resistance to water flow, not easily blocked, uniform distribution of water and air, rough surface

ApplicationThe physical and microstructure of volcanic biofilters is characterized by rough surfaces and microporosity. These characteristics are particularly suitable for the growth and reproduction of microorganisms on their surfaces to form biofilms. The volcanic rock filter material enables the aerated biological filter not only to treat municipal sewage, biochemical organic industrial wastewater, domestic drainage, and slightly polluted source water, etc., but also to replace quartz sand, activated carbon, anthracite, etc. as filter media in water supply treatment. At the same time, the tail water after the secondary treatment process of the sewage treatment plant can be further processed, and the treated effluent can be used as reclaimed water after it has reached the reuse water standard.Chemical Composition:

SiO2CaOMgOFe2O3FeOAl2O3TiO2K2ONa2O53.82%8.36%2.46%9.08%1.12%16.89%0.06%2.30%2.55%

Packaging & Delivery
1. We usually use 1 ton plastic bag to pack it
2. We can devilery the goods after 7-10 days after we receive the payment

Quality Control:
1.Professional QC worker team
2.Three time check before ship
FAQ:

1)Q: Where is your company?
A: Our headquarters is located in Shijiazhuang, Hebei Province, factory in Yunnan, also with many cooperated factories around the domestic.
2) Q: What's the port of loading?
A: Normally Fangcheng Port or Qinzhou Port.
3) Q: How is your packing?
A: Normally we pack our stone with
4) Q: What about shipping mark?
A: We can provide neutral shipping mark, or customer trade mark / OEM trade mark are available.
5) Q: What's your sample policy?
A: Pay for Customized samples, free for standard samples.

The shipping fees is paid by client.
6) Q: What's your MOQ?
A: Usually 1*20'' container
7) Q: How can we guarantee the quality?
A: We'll send you the order update and product pictures for checking. QC inspection by yourself / your friend / 3rd QC agent is accepted.
8) Q: What's your payment term?
A: 30% deposit by TT, balance paid before shipment.
Should you have any questions, please feel free to inquire us at any of your convenience.