半化学草浆制浆废水
semi-chemcial straw pulping effluent
稻草亚铵制浆废液
ammonia sulfite pulping waste liquor
废砂制砖
paving units of waste sand
废纸制浆废水
wastepaper pulping effluent
wastepaper pulp effluents
wastewater from recycled fiber paper mill
高得率制浆废液
high yield pulping wastewater