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The tests showed that the phosphate rock sludge biological carbon to be significantly more K-feldspar, the former can reduce the heavy metal content of sludge biological carbon and cation exchange capacity 更多：https://www.bmcx.com/ , can improve efficiency.

This test shows that phosphorite powder on effect of sludge biological carbon clear than potassium feldspar, which can reduce the content of heavy metals in sludge of biological carbon and cation exchange capacity 更多：https://www.bmcx.com/ , can improve efficiency.

The test shows that the ground phosphate rock to sludge biological carbon is more significant than the potash feldspar will be obvious, the former can reduce sludge biological carbon heavy metal content and cation exchange capacity 更多：https://www.bmcx.com/ , can improve the fertilizer efficiency.

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