Abstract: Provided is a raw material for phosphate fertilizer having excellent fertilizer characteristics, which raw material consists essentially of a slag containing phosphate generated from dephosphorization reaction in molten iron, and is a method for manufacturing the raw material suitable for manufacturing the phosphate fertilizer. The raw material for phosphate fertilizer consists essentially of a slag containing phosphate generated from dephosphorization reaction in molten iron.

Abstract: Provided are a method and an apparatus for treating organic wastewater and sludge, which remarkably reduce the generated amount of sludge at much lower running cost, and which get the size smaller the capacity of the solubilization tank. The method and apparatus for treating sludge has: an biological treatment system, which applies biological treatment to wastewater, a solid-liquid separation unit for separating a solid from a liquid in the wastewater after treating the biologically, to obtain a treated wastewater and a returned sludge. And the apparatus has means for obtaining a withdrawn sludge from a part of the returned sludge, an alkali-treatment tank, which applies alkali-treatment to the withdrawn sludge. The apparatus, also, has a biological solubilization tank, which solubilizes the sludge after treating the alkali-treatment under an anaerobic, anoxic, or microaerophilic condition, and a means for returning sludge to recycle the solubilized sludge to the biological treatment system.

Abstract: The thymidine kinase-lacking hybridoma of the invention has resistance to oaubain and an Ig-producing ability and is formed by fusing a chicken B lymphoblast cell with an immunized chicken spleen cell. The hybridoma can be used as parental cell line for cell fusion, and the fused cell is excellent in the production of IgG.